I agree with much of what you are saying, but you can't pretend that there wasn't some negligence on the part of the airlines (et.al.) that lead to the vast majority of the deaths on 9/11. Had they not allowed middle eastern men with box cutters, kept the cockpit door closed, etc., the planes wouldn't have flown into buildings or crashed. What the government was doing in the aftermath is saying, "we don't want the airlines and the economy crippled by suits where a significant chunk of the recovery will go to attorneys -- both Plaintiff and defense." Even as an attorney, I have to say the reasoning there is sound, even if there are problems with how they went about it.
True to an extent. Back in 1996 the families of the victims of Pan AM 103 forced the Government to take a look at Airline Security. A Commission was formed and headed by AlGORE. The recommendations from the Gore Commission contained many of the post 9/11 security improvements. The report was used as a door stop after the DNC received $700K from the airlines.